The method is based on real 3d wavelet transform, and implements a three dimensional extension of SPIHT in still image coding by defining a new spatial-temporal orientation tree structure.
该方法建立在真三维小波分解基础上，通过定义一种新的时空方向树结构，实现了静止图像SPIHT算法的三维扩展。
Probability estimate of hitting a group of three-dimensional targets of random orientation using a rectangular drill network is deliberated.
本文讨论了使用矩形钻探网打中随机定位的一组三维目标的概率估计。
It is found that the waveguide layer contains uniformly distributed three dimensional strains and the variation of lattice constants in the waveguide depends closely on the waveguide orientation.
结果表明，波导层内含有均匀分布的三维应变场，晶格常数的变化随着波导取向的不同而呈现各向异性特点。
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